I love this brush. It is inexpensive, looks great and helps remove stains and tartar from my teeth. I used to have a problem with plaque/tartar building up
on the back of my teeth before I used the Pro One. That problem is gone, and my teeth are whiter than I can ever remember. I am very satisfied with this brush.
It runs on a single battery in the handle, and I use a rechargeable battery. The compartment is cleverly built to prevent it from getting wet. I highly recommend
this brush. I am very happy with my purchase! Thanks Soniclean!!